USPTO Patents Application 10597633

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PATENT ABSTRACTS OF JAPAN

(ll)Publication number : 60- 200312

(43) Date of publication of application : 09.10.1985

(51)Int.CL

OlFR B/42

B23J 9/22

B25J B/G2

(21) Application number :

59- 056001

(71) Applicant

: HITACHI LTD

(22)Date of filing :

2&0ai984

(72)Inventor :

DOBASH AKIRA

(54) AUTOMATIC DEVICE FOR GRAPHIC PRACTICE OR THE LIKE
(57)Abstract:

PURPOSE: To enable an operator to perform learning ^.^.-.-^^^^
according to a program by maintaining an active state only
when a mobile part is held in a teaching mode and then
starting an automatic device in response to the position
signal sent from a memory in a playback mode.
CONSTITUTION: In a teaching mode, an operator holds a
grip 6 to start an operation. Thus potentiometers 36V\Q9
of drive motors 3, 5, 7 and 8 have changes, and the data
on these changes are stored successively in a memory 21
synchronously with signals sent from the clocks within a
switch device 22. In this case, the operations explained to
a microphone 26 are recorded on a tape recorder 25. Then
the operator holds the grip 6 and sets an operation switch
24 under a playback mode. Thus the positions of drive
motoi^ 32W35 are detected by potentiometei^ 36VV39 with
movement of the operator's hands. These detected
positions are sent to a comparator 27 through a feedback
processor 40 and compared with a command given from
the memory 21 to receive the feedback control in order to
secure a paiied fomi at all times.

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